There are certain temperatures and pressures for substances at which they exist as a liquid. Also there are temperatures and pressures for which they usually are at equilibrium between solid and gas. Superheating is where you take a liquid and put at a temperature and pressure where it would usually be a gas, but does not become a gas until disturbed. Supercooling is the equivalent for solids.
My question is, is it possible to both superheat and supercool a substance, meaning take a liquid substance, bring it to a temperature and pressure on its sublimation curve, yet maintain its liquid state.
If it is possible, what would happen if it were disturbed (like say by a loud blast of sound?)